/* 基础样式 */
.ai-news-grid-container {
    display: grid;
    gap: 20px;
    margin: 30px 0;
}

/* 根据列数设置网格模板 */
.ai-news-grid-container.columns-1 { grid-template-columns: 1fr; }
.ai-news-grid-container.columns-2 { grid-template-columns: repeat(2, 1fr); }
.ai-news-grid-container.columns-3 { grid-template-columns: repeat(3, 1fr); }
.ai-news-grid-container.columns-4 { grid-template-columns: repeat(4, 1fr); }

/* 新闻项 */
.ai-news-item {
    background-color: #fff;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.ai-news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

/* 图片容器 */
.ai-news-image-container {
    position: relative;
    overflow: hidden;
    padding-top: 60%; /* 宽高比 */
}

.ai-news-image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    border: 8px solid #ffffff !important;
    box-sizing: border-box;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    backface-visibility: hidden;
    transform: translateZ(0);
    -webkit-font-smoothing: subpixel-antialiased;
}

.ai-news-item:hover .ai-news-image-container img {
    transform: scale(1.05);
    border-color: #f0f0f0;
}

/* 无图片替代显示 */
.ai-news-no-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f5f5f5;
    color: #999;
}

/* 悬停按钮 */
.ai-news-hover-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ai-news-item:hover .ai-news-hover-button {
    opacity: 1;
}

/* 标题 */
.ai-news-title {
    padding: 15px 15px 5px;
    margin: 0;
    font-size: 18px;
    line-height: 1.3;
}

.ai-news-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.2s ease;
}

.ai-news-title a:hover {
    color: #0073aa;
}

/* 摘要 */
.ai-news-excerpt {
    padding: 0 15px 15px;
    color: #666;
    font-size: 14px;
    line-height: 1.5;
    flex-grow: 1;
}

/* 元数据 */
.ai-news-meta {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    border-top: 1px solid #eee;
    background-color: #f9f9f9;
    font-size: 12px;
    color: #888;
}

/* 单篇新闻文章页样式 - 修改为第二张图片的样式 */
.ai-news-single .ai-news-article {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

.ai-news-single .entry-header {
    display: flex;
    flex-direction: column;
    margin-bottom: 10px;
}

.ai-news-single .entry-title {
    font-size: 36px;
    font-weight: 700;
    color: #083d59;
    font-family: "Space Grotesk", Sans-serif;
    margin-bottom: 5px;
    text-align: left;
}

.ai-news-single .ai-news-meta {
    display: flex;
    justify-content: space-between;
    padding: 0;
    margin: 5px 0;
    border: none;
    font-size: 18px;
    color: #666;
    background-color: transparent;
}

.ai-news-divider {
    border: 0;
    height: 1px;
    background-color: #e5e5e5;
    margin: 10px 0;
}

.ai-news-single .ai-news-content {
    font-size: 18px;
    line-height: 1.6;
    color: #333;
    margin-bottom: 20px;
}

.ai-news-single .ai-news-featured-image {
    margin: 15px 0;
    border-radius: 0;
    overflow: hidden;
}

.ai-news-single .ai-news-featured-image img {
    display: block;
    width: 100%;
    height: auto;
    border: 8px solid #ffffff !important;
    box-sizing: border-box;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.ai-news-single .entry-footer {
    margin-top: 15px;
}

.ai-news-single .ai-news-navigation {
    font-size: 14px;
}

.ai-news-single .ai-news-navigation a {
    color: #666;
    text-decoration: none;
}

.ai-news-single .ai-news-navigation a:hover {
    color: #083d59;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .ai-news-grid-container.columns-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .ai-news-grid-container.columns-3,
    .ai-news-grid-container.columns-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ai-news-single .entry-title {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .ai-news-grid-container.columns-2,
    .ai-news-grid-container.columns-3,
    .ai-news-grid-container.columns-4 {
        grid-template-columns: 1fr;
    }
    
    .ai-news-single .entry-title {
        font-size: 20px;
    }
}